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Re: Measuring bolts
Posted to Technical Tips Forum on 11/2/2020 2 Replies

After 15 years working at a John Deere dealership, I found a lot of variance in bolt head sizing. 12mm bolts usually took a 19mm wrench or might need an 18; the flange headed ones could be 18 or even 16, and they all might be the same grade 10.9!

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